Niempoog 2012.

Methods	Randomised, double‐blind, controlled study. Duration 6 weeks
Participants	OA knee N = 100
Interventions	Plygersic gel (4% ginger and plai extract) Diclofenac 1% solution
Outcomes	Knee Injury and Osteoarthritis Outcome Score
Notes	Completed Request for full paper sent to lead author 24 February 2015 Abstract reports: Plygersic gel relieves joint pain and improves problematic symptoms and improves the quality of life in osteoarthritis knees during a 6‐week treatment regimen with no differences to the 1% diclofenac gel group

OA: osteoarthritis; WOMAC: Western Ontario and McMaster Universities Arthritis Index